Material: High Quality CVD Znse,compatible power: 40W-200W
•Diameter: 20mm/0.79 inch; Focal Length:50.8mm/2 inch; Thickness: 2mm/0.07 inch
•Shape: Meniscus; Transmittance: =99.5%;Package includes: 1 x Lens
•Superb Coating Process: Double-sided Solid Coating. Wiping Resistance. Long Working Life
•Usage: CO2 Laser Lens for CO2 laser engraving, cutting machine